High Accurate Crack Reconstruction Based on an Improved Discontinuous Digital Image Correlation: Subset Restore and Adaptation Method

Table 1

Comparison of different image acquisition methods.

Description	Acquisition methods for digital images
	Laboratory experiment	Normal digital simulation	Improved digital simulation
Total time spend	Weeks	Hours	Hours
Cost	Yes	No	No
Image quality	High	Medium	High
Noise	Yes	No	No
Obtaining disposed surface	Hard	Easy	Easy
Proximity to reality	Agree	Approximate	Disagree
Acquisition of displacement results	Complex for limited position	Easy for arbitrary position	Easy for arbitrary position